Machine for concentrating ore and other materials.



L. M. A. ZUMBUSGH.

MACHINE FOB. GONCENTRATING ORE AND'OTHEB. MATERIALS.

APPLICATION FILED DEC. 23, 1912.

1,096,087. Patented May 12, 1914.

3 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH CO-.WASHINUTON, n.-c4

L. M. A. ZUMBUSOH.

MACHINE FOR GONOENTRATING ORE AND OTHER MATERIALS.

APPLICATION IIL ED DBO. 23, 1912.

Patented May 12, 1914.

3 SHEETS-SHEET 2f COLUMBIA PLANOGRAPH co., WASHINGTON. D. c,

L. M. A. ZUMBUSUH.

MACHINE FOB. GONCENTRATING ORE AND OTHER MATERIALS.

APPLICATION FILED DEC. 23, 1912.

1 09 0 1 Patented May 12, 1914;

3 SHEETS-SHEET 3.

COLUMBIA FLANOORAPH c0.. WASHINGTON D. c.

LEO MICHAEL ANDREW ZUMBUSCH, 0F JOHANNESBUBG, TRANSVAAL, SOUTH AFRICA.

MACHINE FOR GONGENTRATING- ORE AND OTHER MATERIALS.

To all whom it may concern Be it known that I, LEO MICHAEL ANDREW Zmannscz-r, a citizen of the United States of America, and resident of Johannesburg, Province of Transvaal, Union of South Africa, have invented certain new and useful Improvements in Machines for Concentrating Ore and other Materials, of which the following is a specification.

This invention has reference to a machine or apparatus applicable for concentrating alluvial metalliferous deposits or material, and crushed ore products, for the recovery of the precious or base metal contents thereof. and alluvial matter for the recovery of diamonds or other precious stones.

The primary object of my invention is to construct machine in which the material or matter can be concentrated'in an efficient manner without preliminary grading or classification.

In accordance with my invention the apparatus may comprise one or a plurality of trays or pans of suitable configuration in combination with a receptacle of suitable shape which is adapted to receive continuously the material to be concentrated, preferably in the form of a pulp or mixed with water, and to deliver the same intermittently into or on to a concentrating pan or tray which may form one of a seriesso that when the latter is operated to concentrate the material, said material is immune from disturbance by the influx of fur ther material, while the gangue or waste is being discharged, with the result that the efficiency of the apparatus is materially increased.

My invention will be fully described with the aid of the accompanying drawings in which I illustrate a practical embodiment of the same.

Figure 1 is a sectional elevation of the apparatus as seen from the driving end, the plane of section being indicated by the dotted line U-$ in Fig. 2. Fig. 2 is a side elevation, and Fig; 3 a plan. Fig. 4 is a view similar to Fig. 1 illustrating the concentrating pans or trays in another position. Fig. 5 is a sectional elevation on line mm Fig. 2.

The machine, in the particular form illustrated in the drawings, comprises a rectangular stationary frame 1 which is open on all sides. This may be built up of angle iron as shown, or any other suitable material.

Specification of Letters Patent.

Application filed December 23, 1512.

Patented May 12, 1914.

Serial No. 738,309.

lVithin the stationary frame 1 there is supported a further rectangular movable frame 2. The frame 2 is supported inside the frame 1 by means of four, more or less, vertical fiat springs 3 which at their lower ends are fixed to the stationary frame 1, as indicated at 4, and at their upper ends are at tached through the medium of brackets 5 to the top of the frame 2.

The frame 2 is adapted to be oscillated or moved backward and forward in a horizon tal direction, by the means hereinafter described, between two buffer springs 6, 7. The one buffer spring 6 is attached to one of the top end horizontal members of the movable frame, by means of a long bolt 8 which bolt at its other end is utilized as a means of fixing to the other top horizontal end member of said frame 2 a vertical piece 9 which latter at its other and lower end is fixed to the bottom horizontal member of said frame 2. 10, 11 in Fig. 3 represent blocks 01' pieces fixed in the top horizontal end member of the stationary frame 1 for the ends of the spring 6 to bear against. The other spring 7 is fixed by means of a bracket 12 to a further top horizontal member 13 which is fixed between the top longitudinal or side memhers of the stationary frame 1. The ends of the spring 7, as shown in Fig. 3, bear against the top horizontal member of the movable frame 2. By these means the movable frame 2 when it is positively oscillated or moved horizontally in the direction of its length is buffered between the springs 6, 7

The means for oscillating the movable frame 2 in the manner explained is shown comprising a bracket 14 fixed to the piece 9 near the top, and a connecting rod 15 one end of which is pivotally attached to the bracket 14- and the other end revolubly embraces a crank 16 provided on a crank shaft 17 18, 19 representing bearings fixed to the vertical side members of the stationary frame 1 for said crank shaft 17. 20 is a pinion or small toothed wheel keyed upon the crank shaft 17. The driving means, which revolve the crank shaft 17 through the pinion 20, are shown consisting of a crank handle 21 fixed upon a shaft 22 on which is keyed a large toothed wheel 23 which meshes withl said pinion 20; 24, 25 are the bearings for shaft 22. Bearing 24 is fixed to a vertical member 26 which is arranged between and secured to the two longitudinal members at one side of the station ary frame 1, and the other bearing 25 is attached to a. vertical member 27 which is fixed at the top to the member 13 and at the bottom to a horizontal member 28 connecting the bottom longitudinal members of said stationary frame 1.

27 is a vertical member which, like mem ber 27, is fixed to the top and bottom longitudinal or side members of frame 1.

Instead of actuating the machine by means of the crank handle 21 it may be driven by any convenient motor or engine by belt or gearing through the shaft 22.

The various concentrating pans and/or trays are operatively carried by means of the movable frame 2. In the specific arrangement shown in the drawings provision is made for receiving two independent streams of the pulp to be concentrated. To

this end there are provided and revolubly mounted in the top of the frame 2, a pair of semicircular or approximately SI11l 3l1CU lar pans 29, 30. Each of the pans 29, 30 comprises end plates 31 and the semicircular or approximately semicircular plate 32 fixed between said end plates 31. The pans 29, 30 are arranged in oscillating cradles or frames consisting of the two end circular plates 34 and the four longitudinal bolts upon three of which. the pan rests and by which bolts the pans are clamped in position between the circular end plates or disks 33, 31-. The end plates 33, 34 are provided with trunnions 36 which are journaled in bearings 37, 38 provided therefor on the top end members of the movable frame 2. The securing of the pans 29, 30 in their cradles in the manner explained admits of their being easily and quickly removed in order to empty them of the concentrates, as and when necessary. These concentrating pans constitute the first of the series of concentrating pans and/or trays.

lVithin each of the concentrating pans 29, 30 there are provided preferably removable receptacles 39, 10 shown of V shape in crosssection in which the pulp streams are re ceived preferably continuously from launders or their equivalent 11, 12. Each of the receptacles 39, 10 is shown comprising end plates 43 of V shape and side plates 4-1. The receptacles 39, 40 as shownsee more particularly Fig. 3eXtend the full length of the concentrating pans 29, 30, in which they are preferably removably supported by means of brackets 45, d6see Fig. 4fixed on the inside of the end plates 31 of the pans 29, 30, or in any other convenient manner.

The concentrating pans 29, 30 are provided at one side with an outlet 17 which is formed in the semicircular plate 32 and extends to within a. short distance of the plates 33, 31. The outlets 1'? permit the lighter portion of the load which is delivered in to the pans 29, 30 from the receptacles 39, 40 to be discharged on to an upper concentratingtray 48 hereinafter referred to, when said pans are caused to assume the position in which they are shown in Fig. 1 of the drawings, The receptacles 39, 10 are of such a size or capacity that they will receive and hold the whole of the pulp which passes into them from their respective launders 41, 42 during the whole of the time that the pans 29, 30 are in or approaching the posi tion in which they are shown in Fig. 1 and discharging on to the top concentrating tray 418. The said receptacles 39, 10 are also so arranged relative to the outlets 47 and the launders 11, 42 that shortly after the pans 29, 30 commence to move from the position in which they are shown in Fig. a no por' tion of the inflowing streams of pulp pass from the receptacles 39,v 40 into the pans 29, 30, the emptying of said receptacles 410 into said pans 3O practically only taking place after the outlets 417 have been raised above the level of the contents of the pans by the movement of said pans 29, 30 from the position in which they are shown in Fig. 1 toward the position in which they are shown in Fig. 1.

The means for moving the concentrating pans 29, 30 between their two extreme positions (the positions in which they are shown in Figs. 1 and 4) comprise a pair of arms or links -19, 50 one for each pan. The arms or links 49, 50, are pivotally attached at their upper ends to the end plates 3 1 of the oscillating cradles at the driving end of the machine and at their lower ends work on a pin 51 which moves up and down in a vertical guiding slot 52 in the piece 9. The arms or links 19, 50 at their upper ends are bent to pass over the top horizontal end member of the movable frame 2 and at their lower ends work against the inside of the piece 9, the latter being bent outwardly at the top and bottom as indicated at 53 and 53 to permit of their so working. 54 is a link which at its upper extremity loosely embraces the pin 51 in front of the piece 9. The link 5-1 at its low-er end is provided with slightly elongated slot S l -see Fig. 5 in which engages one arm 55 of a bell crank lever, 56 being a bracket in which the bell crank lever is fulcrumed. The other arm 57 of the bell crank lever is pivotally connected to a link 58 which link at its other end is pivotally attached to a sliding member or cross-head 59 which is adapted to slide on a stay bolt or rod 60 fixed between and to the bottom end horizontal members of the movable frame 2.

61 is a connecting rod which is pivotally attached to the cross-head 59 at one end and at its other end loosely embraces the pin 62 of a crank 63 which is provided on a shaft 6 1.

is a bearing fixed to a vertical member 66 of the stationary frame which member is fixed to and between the horizontal members 13, 28. The other bearing for the crank shaft 64 is fixed in a corresponding position to the vertical member 26 of the stationary frame. On crank shaft 64 there is keyed or otherwise fixed a toothed wheel 67 which is driven from the shaft 22.

68see Figs. 2 and 3is a toothed wheel fixed on shaft 22, and 69 is a larger toothed wheel fixed on an intermediate shaft 70 and meshing with wheel 68. On shaft 70 there is a toothed wheel 71 which meshes with and drives the toothed wheel 67. The intermediate shaft 70 at one end runs in a bearing 72 fixed to vertical member 27. and at its other end in a bearing fixed in a corresponding position to the member 26. By the employment of the above described gears the crank shaft 64 is driven at a suitable slower speed than shaft 22. I

Within the movable frame 2 and beneath the semi-circle pans 29, 30 there are arranged two concentrating trays 48 and 73 of which the tray48 hereinbefore referred to is the uppermost. Each tray comprises a comparatively shallow rectangular vessel which extends practically the full length and width of the frame 2. As is indicated at 74 in Figs. 1 and 4 the top tray may be provided with longitudinal rifiies or projections which operate to catch andretain any concentrates contained in the gangue or waste which is discharged from the oscillating concentrating pans 29, 30 into said tray 48. The tray 73 may also be provided with riflies or other means for retaining any con centrates which may be contained in the gangue or waste delivered from the tray 48 on to the tray 73. The pans 29, 30 may, if desired or found requisite, be provided with rifiles for the same purpose, as shown by the dotted lines 30 in the pan 30 in Fig. 5.

7 5 represents an outlet in the bottom of the tray 48 through which the material passes from tray 48 to tray 73 and 76 is an outlet in the bottom of tray 73 through which the material passes out of said tray 73.

The trays 48, 73 are supported in the movable frame 2 in such away that in addition to the longitudinal motion of said frame be tween the springs 6, 7, they can be moved alternately about opposite sides of frame 2 in order to discharge the gangue or waste portion of their contents. This in the arrangement shown in the drawings is accomplished by providing a carrying frame for each tray. The frame for the upper tray 48 comprises two end pieces 77, 78 and two longitudinal side rods 79, 80. The upper edges of the side of the pan 48 are beaded or flanged and rest on the members 77, 78, 79, 80. The rod 79 at its ends is carried by the vertical end members of the movable frame 2 on one side of said frame 2 so that said rod forms a hinge or pivot about which the members 77, 78 can move in order that that side of the pan which rests on the rod 80 may be raised and lowered. In like manner the other pan 73 is supported in a carrying frame comprising two end pieces 81, 82 and two longitudinal rods 83, 84. The rod 83 like the rod 79 is carried by the vertical end members of the frame 2 but at the opposite side of said frame. By supporting the concentrating trays 48, 73 in the manner above described the tray 48 can be lowered in order to empty the gangue or waste portion of its contents through the outlet into the pan 73 while the latter is maintained in a horizontal or substantially horizontal position, or with a slight downward inclination in the direction of the rod 83, as shown in Fig. 4. hen the tray 73 is inclined in which position it is shown in Fig. 4in order to discharge the gangue or waste portion of its contents, the upper tray 48 is raised into a horizontal or substantially horizontal position or with a slight downward inclination in the direction of the rod 79to receive the matter from the concentrating pans 29, 30so that the fiow of material from tray 48 into tray 73 is stopped so long as tray 73 is discharging.

Upon the top of the upper tray 48 a plate 85, flanged at the ends, is provided and supported on top of said tray 48 in such a way that when said tray 48 is placed in the position shown in Fig. l to receive the matter from the pans 29, 30 said plate 85 is downwardly inclined in the direction of the rod 79 and it serves to convey the matter which passes through the outlets 47 of both pans to that end of the tray 48 which is nearest the rod 79. It is shown in Fig. 1 in the position it is caused to assume to accomplish this object.

The requisite motion to operate the trays in the manner above explained is obtained from or taken off the pin 51 by providing alink 86, which at its upper end loosely embraces said pin 51, and is arranged between link 54 and piece 9. 87 is a lever which at one end is pivotally attached to the lower end of the link 86. This lever is keyed on a shaft 88 which passes through and is j ournaled in the lower horizontal end members of the movable frame 2. To the other and opposite end of the lever 87 there is adjustably pivoted a link 89 which at its other and upper end is pivotally attached to the frame carrying the pan 48. The fever 87 is provided at right angles with an arm 90 to the end of which is preferably adjustably pivoted a link 91. The link 91 at its other end is preferably adjustably pivoted to one end of a bell crank lever 92 which latter is keyed to a shaft 93 which passes through and is j ournaled in the lower horizontal end members of the movable frame 2. The other end of the bell crank lever 92 is preferably ad justably pivoted to a link 9% which at its other and upper end is pivotally attached to the frame carrying the lower pan 7 The other end members 78, S2 of the carrying frames for the trays 48, 73 are preferably connected and actuated in a similar manner by means of a pair of links 95, 96, two bell. crank levers 97, 98 keyed on the other ends of shafts 88, 9-3, and a link 99. '1. his insures the simultaneous movement of both ends of the pans l8, 73.

Although I show two of the concentrating pans 29, 30 and two of the concentrat ing trays l8, 73 it is to be understood that the apparatus may consist of one or more of the pans and one or more of the trays, or the semicircular pans may be dispensed with and a plurality of the trays be employed, the uppermost being so arranged as to perform the function or serve the purpose of the receptacle (as 39 or 40) for receiving and preventing disturbance by the inflowing pulp of the material in the next lower tray during the time such tray is inclined to discharge the gangue or waste portion of its contents.

lln the ope 'ation of the apparatus the material or matter to be concentrated will, after l'iaving, if necessary, been passed through a screen or screens of suitable mesh, be introduced in the form of a pulp-or mixed with water-by means of the launders or their equivalent all, 42 into the pans 29, 30 through the medium of the receptacles S9, 40. The pans 29, 30 move in the direction indicated by the arrows in Fig. l from the position in which they are shown in that figure into the position they are shown in Fig. 1. At the same time the top concentrating tray 48 has been moved from the position shown in Fig. i into the position shown in Fig. l. The material which is discharged through the outlets a? in the pans 29, 30 is now delivered on to the inclined plate 85 and by the latter conveyed to that end of the tray as remote from the outlet 75. In the meantime, (the lower tray 7-3 having simultaneously been moved from the position in which it is shown in Fig. 4: to that in which it is shown in Fig. l) the gangue or waste portion of the contents of said lower tray 78 passes out through the outlet 7 6. The return of the lower tray 73 from the position shown in Fig. 1 to the posit-ion shown in Fig. 4: synchronizes with the movement of tray 48 from the position shown in Fig. 1 to that shown in Fig. l so that the material not retained in tray 48 is delivered on to tray 73. Simultaneously with the inclining of the tray 48 the pans will have been moved from the position in which they are shown in Fig. 1 to that in which they are shown in Fig. l, the discharge through the outlets l? being stopped and the receptacles 39, 4-0 inclined see Fl lto empty their contents into the pans 29, 30.

An important advantage of a machine constructed as above described is that it requires a comparatively small amount of power to operate it, which arises from the fact that the lifting or upward motion of the tray which has discharged its load is more than compensated for by the downward motion of the other tray and its load.

What I claim as my invention and desire to protect by Letters Patent is ln a machine for concentrating ore or other materials the combination of a series of reversely disposed, superimposed concentrating tables, each supported for tilting movement in vertical planes and each adapted to discharge gangue to the next lower table, when tilted to its lower position, means for tilting the tables, and means coordinating the movements of the tables to simultaneously place some tables in one position and intermediate tables in the other position.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LEO MICHAEL ANDREW ZUMBUSCH.

Witnesses CHAs. OvENDALn, Mani) Porn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 20. C. 

